Attachment device for cylinder boring machines



April 1 O. J. EJOLSSON 2,418,78

ATTACHMENT DEVICE FOR CYLINDER BORING MACHINES Filed Dec. 14, 1944 2 Sheets-Sheet 1 4s \3 64 FIG.

INVENTOR. FIG. 2 1 OLOV J.E.OLSSON BY H fi/MM ATTURNEY April 8, 1947 o. J. E.'OLSSON 2,418,78

ATTACHMENT DEVICE FOR CYLINDER BORING MACHINES Filed Dec. 14, ;944 2 Sheets-Sheet 2 z 51 2 52 //l"l 7' 6t 18 26 38 \o 4 l 4 6O 4 I l 25 Q 4 22 4 INVENTOR.

ATTORNEY Patented Apr. 8, 1947 UNITED STATES PATENT OFFICE ATTACHMENT DEVICE FOR CYLINDER BORING MACHINES 010v J. E. Olsson, Minneapolis, Minn, assignor to Storm Manufacturing (30., Inc., Minneapolis, Minn, a corporation of Minnesota 9 Claims. 1

I This invention has relation to an attachment device for cylinder boring machines.

An object of the invention is to provide an attachment device of novel and improved construction for fastening a cylinder boring machine upon a block having cylinders to be bored in fixed relation to the block and cylinders.

A further object is to provide an attachment device for fastening a cylinder boring machine upon a block having cylinders to be bored in fixed relation to the block and cylinders which will include various improved features and characteristics of construction novel both as individual entities of the attachment device and in combination with each other.

' A further object is to provide an attachment device which will include a novel and improved construction and arrangement for anchoring and clamping a cylinder boring machine to and upon a block having cylinders to be bored.

And a further object is to provide a cylinder boring machine attachment device incorporating features and characteristics of construction as' hereinafter set forth.

With the above objects in view, as well as others which will appear as the specification proceeds, the invention comprises the construction, arrangement and combination of parts as now to be fully described and as hereinafter to be specifically claimed, it being understood that the disclosure herein is merely illustrative and meant in no way in a limiting sense, changes in details of construction and arrangement of parts being permissible so long as within the spirit of the invention and the scope of the claims which follow.

In the accompanying drawings forming a part of this specification,

Fig. 1 is a top plan View of an attachment device made according to the invention, the view also disclosing, in transverse section taken as on line l-l in Fig. 3, the base of a cylinder boring machine with which the attachment device is assembled;

Fig. 2 is a transverse sectional view, taken as on line 22 in Fig. l, of the cylinder boring machine base. disclosing parts of the attachment device in end elevation;

Fig. 3 is a longitudinal central sectional view, taken as on line 3-3 in Fig. 1; and

Fig. 4 is a detail sectional view, taken as on line 44 in Fig. 3,

With respect to the drawings and the numerals of reference thereon, l denotes the base of a cylinder boring machine having a boring tool (not shown) adapted to be operative upon V cylinders to be re-bored of a'cylinder block block 2 H; As disclosed, the cylinder boring machine base it is supported upon the cylinder block H, and the attachment device of the invention is for removably securing said cylinder boring machine to said cylinder block at a cylinder l2 of the cylinder block other than a cylinder to be rebored, according to practice which is usual, said ll of course including cylinders, not necessary to be shown, additional to the cylinder l2.

The cylinder boring machine base Hi includes spaced apart, parallel, upright walls, designated l3, it, which provide a rectilinear area It between said walls l3, [3 open to the lower margin iii of said base H).

An anchor, designated [6, of the attachment device is adapted to be situated within a cylinder, such as l2, of'a cylinder block, such as H, adjacent a cylinder to be re-bored, a clamp, represented at ll, of said attachment device is adapted to be situated within the rectilinear open area M of the base, such as H), of a cylinder boring machine and above said cylinder block, and a connector, denoted l8, of the attachment device is for interconnecting the anchor 16 and the clamp H.

An upper entity of the anchor I6 is constituted as a block of metal or material providing a vertical slab Is, a horizontal ledge 20 integral'with an upper portion of said vertical slab l9, and spaced, parallel ears 2!, 2| situated at the inner side of the vertical slab l9 and below the horizontal ledge 20 adjacent both said vertical slab and horizontal ledge. An anchoring'pin 22, slidably situated in a transverse'opening 23 in the vertical slab I9 at a location adjacent the inner end of said vertical slab and opposite the horizontal ledge 20, includes a beveled inner end 25 and a rounded outer end 25. A fixing screw 26 in a threaded opening 21 in the inner end of the vertical slab I9, adjacent the horizontal ledge 29 and perpendicular to the anchoring pin 22, is adapted to be turned down against the beveled inner end 24 of said anchoring pin thus to cause the anchoring pin to be forcibly moved outwardly of the transverse openin 23. The horizontal ledge 20 includes an arcuate surface 28 at the side of said horizontal ledge opposite the vertical slab l9, and the anchoring pin 22 is situated at the side of said upper entity of the anchor. it directly opposite said arcuate surface 28. The construction and arrangement and the overall dimensions in horizontal direction of the upper entity of said anchor it are .such that the fixing screw 26 can be turned down against the beveled inner end 24 of the anchoring pin 22 to cause the arcuate surface 28' of the horizontal ledge 20 and the rounded outer end 25 of said anchorin pin to be pressingly engaged against diametrically opposite portions of the internal cylindrical surface of a-cylinder such as I21, about as disclosed in Fig. 3 of the drawings, thus to cause said upper entity of the anchor 16 to be. grasped within the cylinder against the possibility of accidental displacement.

A lower entity of said anchor i5 is constituted as an L-shape piece of metal or material providing a vertical arm 29 and ahorizontal lug 3d integral with a lower portion of said vertical arm 29 and adapted to be engaged beneath and against the lower surface of a cylinder block adjacent the lower end of a cylinder such as i2 in which the anchor I6 is situated, about as disclosed in Fig. 3 of the drawings. The upper portion of the vertical-arm 29 of the L-shape piece of metal or material constituting thelower entity of the anchor l5 is'situated between the spaced ears 2! 2! of the upper entity of said anchor l5 and the upper end of said vertical arm 29 i pivotally secured, as at 3l, to said spaced ears 2!, 2! for swinging movementin a vertical plane in direction toward and away. from a portion of the oriinder wall directlyv below the arcuate surface 28 of the horizontal ledge 25. A compression spring 32, seated in a concavity 33 in a lower portion of the vertical slab wand engaged, as at 34, against a portion of the surface of the vertical arm 29 below the pivotal support 31' and opposite the horizontal lug 30,.normal1y urges said vertical arm 29 to swing in direction away from said vertical slab l9 and toward the adjacent portion of the cylinderwall thus to cause said horizontal lug normally to 'hesituated beneath the'lower surface of the cylinderblock. Clearance is'prcvided between the vertical slab l9 and thevertical arm 29 so that said vertical armcan be swung, against action of the compression spring 32; far enough away from saidadjacent portion ofthe cylinder-wall to permit the horizontal lu 30 to'be moved from position beneath the cylinder block when this is intentional.

The" clamp I! includesa frame consisting of spaced apart;-parallel, oppositely disposed frame members, denoted 35 and 36, respectively, secured to each other by transverse pins 31. 7 Each of the irame'mem'bers 35 and BGincludesan inwardly extending shelf, designated 38 and 39, respective- 1y, at the 'lower portion of the corresponding frame member. Said shelves 38 and 39 are in the same horizontal plane, and the interior surfaces, represented 49 and 4!, respectively, of the shelves 38 and 3,9 terminate in spaced apart, par allel relation, about as disclosed in Figs. 2 and 3 of the drawings. The frame members 35 and 36 are adapted to be situated within the rectilinear open area l4 ofthe base such as 19 of a cylinder boring machine and supported upon a cylinder block such'as H, and the bodies of said frame members are adapte'd'to lie in spaced, substantiallyparallel relation to the spaced walls such as'l3, l3 of said base.

Actuating cams, denoted 4'2 and 43, respectively; of It'nei clamp I] are supported upon an adjusting-rod 44 of said clampsin such manner that said actuating cams can be moved. toward: and away from each other'.'. More explicitly, the adjizsting rod includes threaded portions; one rightfiand the :other left, represented and 46, respectively; upon its oppositeehds, and the actuatlng cams 42 and 43 include internal threads ridable upon said opposite threaded portions 45 and 45. The adjusting rod 64 and said actuating cams 42 and d3 are situated between the frame members 35 and 3% of the clamp H, and the overall width of each actuating cam is as disclosed but a trifle less than the measurement representing the distance between said frame members 35 and 35. A knurled hand piece 4'! upon an end of said adjusting rod 44 and situated at position to be accessibl is adapted manually to be turned thus to cause the adjusting rod 44 to be rotated.

The opposite end portions of spaced apart supporting rollers, denoted 48, 48, 48, 48, for the 48 extend through elongated slots 52 through said frame members 35 and 36.

Camming rollers, designated 53 and 54, respectively, of the clamp I! are situated above the actuating cams 42 and 43. More explicitly, there is a camming roller 53 adjacent one end of the clamp frame directly'above the actuating cam 42 androtatably mounted upon a spindle 55 between and supported by the frame members 35 and 36, and there is a camming roller 54 adjacent the opposite end of said clamp frame directly above the actuating cam 43 and rotatably mounted upon a spindle 56 between and supported by said frame members 35 and 3B. Said actuating cam 42 includes a camming surface 5! at its inner, upper portion adapted to be engaged under and against the camming roller 53, and said actuating cam 43 includes a camming surface 58 at its inner, upper portion adapted to be engaged under and against the camming roller 54.

The construction and arrangementare such that when the knurled hand piece 47 is turned to cause the adjusting rod 44 to be rotated the actuating cams 42 and 43 are moved inwardly or outwardly, as the case may be, upon said adjusting rod. Clearly, rotation of said actuating cams will be precluded by engagement of. the lower fiat surfaces 59, 5 withthe supporting rollers 43, 48, 48, 48 and of the camming. surfaces 51, 58 with the camming rollers 53, 54. The construction and arrangement are also such that when the actuating cams 42 and 43 are moved toward each other, the camming surfaces 51 and 58 will cause the 'camming rollers 53 and 54, and hence the clamp frame, to' be elevated, and that when said actuating cams 42 and 43 are moved away from each other, said camming surfaces 51 and 58 will permit said camming rollers 53 and 54, and hence said clamp frame, to be lowered, until rested upon the cylinder block. Obviously, the cut-out portions 5|, 51 and the elongated slots 52, 52 in the frame members 35 and 3B arefor allowing movement of the clamp frame relative to'the supportin rollers."

The connector I8 is constitutcd'as a vertical retaining screw 59 situatedin an internal thread 60 of the'horizontal ledge28 of'the upper entity of the anchor l6 and having a horizontal annular flange or head-6| upon its upper end. 'An

upper portion of the vertical retaining'screw 59, beneath the horizontal annular flange or head 6|, is adapted to lie in the space between the interior surfaces and 4| of the shelves 38 and 39 of the frame members 35 and 36, and portions 62 of the lower surface of said horizontal annular flange or head 6| are adapted to be engaged against portions of the upper surfaces of said shelves 38 and 39, about as disclosed in Fig. 2.

In Fig. 3 of the drawings the clamp frame is disclosed as resting upon the cylinder block I I, and the actuating cams 42 and 43 are disclosed as when at substantially released positions. It

will beevident that when the knurled ,hand piece 41 is turned to cause said actuating cams 42 and 43 to be moved toward each other from their positions as in said Fig. 3, said clamp frame will become elevated, toward the position as in Fig. 2, thus to cause the shelves 38 and 39 to be grippingly engaged up against the lower sur face of the horizontal annular flange or head 6| upon the vertical retaining screw 59. In practice, the connector l8 will be initially adjusted so that its annular flange or head BI is set at close relation to or in contiguous relation with the upper surfaces of the shelves 38 and 39. Upon turning of the knurled hand piece 41 in direction to cause the actuating cams 42 and 43 to be moved toward each other, the lower flat surfaces 50, 58 will ride inwardly over the supporting rollers 48, 48, 48, 48 and the camming surfaces 51, 58 will ride inwardly under the camming rollers 53, 54, thus to cause the clamp frame to be elevated and the base I!) of the cylinder boring machine to be securely anchored to and clamped down upon the cylinder block H. The horizontal lug 30 of course will preclude upward movement of the anchor I 6, and said base 10 will be rigidly held to said anchor 16 and down against the cylinder block ll through the instrumentality of the supporting rollers 48, 48, 48, 43, the actuating cams 42, 43, the camming roller 53, 54, the spindles 55, 56, the frame members 35, 36, their shelves 38, 36 and the connector IS.

The set positions of the actuating cams 42 and 43 upon the adjusting rod 44 may be steadied by a tension spring 63.

Plugs 64 in one of the walls l3 of the base I8 may constitute means for removably retaining the supporting rollers 48, 48, 48, 48 in their intended positions. Evidently, removal of said supporting rollers from the spaced walls I3, l3 of said base ID will permit removal of the clamp I! from the rectangular open area l4.

Clearly, the anchor I6 will be readily and easily removable from a cylinder upon release of the anchoring pin 22 by partial Withdrawal of the fixing screw 26.

What is claimed is:

1. In an attachment device for fastening a machine base upon and against a surface of a block, a member adapted to be anchored to said block, spaced apart supporting elements upon said machine base adapted to be engaged against a surface of said block, a clamp frame adapted to be connected to said member, spaced apart camming elements upon said clamp frame, and spaced apart actuating cams upon said supporting elements adapted to be actuated to cause said camming elements to be moved in direction away from said block.

2. In an attachment device for fastening a machine base upon and against a surface of a block,a member adapted to be anchored to said block, spaced apart supporting elements upon said machine :base adapted to be engaged against a surface of said block, a clamp frame, means for connecting said clamp frame to said member,- spaced apart camming elements, and spaced apart actuating cams adapted to be actuated to cause said camming elements to be moved in direction away from said block thus to cause said spaced apart supporting elements to be engaged under pressure against said surface.

3. In an attachment device for fastening a machine base upon and against a, surface of a block, a member adapted to be anchored to said block, spaced apartsupporting rollers upon said machine base, a clamp frame adapted to be connected to said member, spaced apart camming rollers upon said clamp frame, and spaced apart actuating cams upon said supporting rollers adapted to be actuated to cause said camming rollers selectively to be moved while substantially in a single plane away from said block and to be permitted to be moved by gravity toward said block.

4. In an attachment device for fastening a machine base upon and against a surface of a block, a. member adapted to be anchored to said block, spaced apart supporting rollers upon said machine base, a clamp frame, means for connecting said clamp frame to said member, spaced apart camming rollers upon said clampframe, and spaced apart actuating cams adapted to be actuated to cause said camming rollers selectively to be moved while substantially in a single plane away from said block and to be permitted to be moved by gravity toward said block.

5. In an attachment device for fastening a machine base upon and against a surface of a block, a member adapted to be anchored to said block, spaced apart supporting elements upon said machine base, a, clamp frame, means for connecting said clamp frame to said member, spaced apart camming elements upon said clamp frame, and spaced apart actuating cams adapted to be actuated to cause said camming elements to be moved relative to said spaced apart supporting elements.

6. In an attachment device for fastening spaced apart walls of a machine base upon and against a surface of a block, a member adapted to be anchored to said block, spaced apart supporting elements upon said machine base between its spaced apant walls, a clamp frame between said spaced apart walls of said machine base, means for connecting said clamp frame to said member, spaced apart camming elements upon said clamp frame, and spaced apart actuating cams adapted to be actuated to cause said camming elements to 'be moved in direction away from said block.

'7. In an attachment device for fastening spaced apart walls of a machine base upon and against a surface of a block, a member adapted to be anchored to said block, spaced apart supporting elements upon said machine base between its spaced apart walls, a, clamp frame between said spaced apart walls of said machine base, means for connecting said clamp frame to said member, spaced apart camming elements upon said clamp frame, and spaced apart actuating means upon said supporting elements adapted to Ibe'actuated to cause said camming elements to be moved in direction away from said block.

8. In an attachment device for fastening spaced apart walls of a machine base upon and 7 against a surface of a block, a member adapted to be anchored to said block, spaced apart supporting rollers upon said machine base bet-ween its spaced apart walls, a clamp frame between said spaced apart walls of said machine base, means for connecting said clamp frame to said member, spaced apart camming rollers upon said clamp frame, and spaced apart actuating cams adapted to be actuated to cause said camming rollers selectively to be moved away from said block and to be permitted to move by gravity toward said block.

9. In an attachment device for fastening spaced apart walls of a machine base upon and against a surface of a block, a member adapted 15 to be anchored to said block, spaced apart supporting elements upon said machine base between its spaced apart walls,- a clamp frame between REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,844,496 Blume Feb. 9, 1932 2,078,598 Blazek et a1 Apr. 2'7, 193'? 2,062,494

Blazek et a1 Dec. 1, 1936 

